Agencies › Department of Energy › NAICS 541690

Department of Energy (DOE): NAICS 541690 — Other Scientific and Technical Consulting Services

2open solicitations

$57.7Mobligated in FY2026

26contracts ending within 18 months

Open solicitations

R--Technical Services Support8(a) Set-Aside (FAR 19.8) · Due 14 October 2026
RELAP5-3D 4.x: Thermal-Hydraulic Nuclear Reactor Analysis, Licensing OpportunityUnrestricted (full and open) · Due 01 November 2026

How DOE NAICS 541690 spends

FY2021$9.2M

FY2022$14.2M

FY2023$3.0M

FY2024$47.9M

FY2025$6.1M

FY2026$57.7M

FY2027*$300K

Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

DOE NAICS 541690 contracts expiring in the next 18 months

26 contracts worth $142.1M.

Incumbent	Buyer	What	Value	Ends	Est. solicitation	Record
NATIONAL ACADEMY OF SCIENCES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$1.9M	07 October 2026	Now / imminent	USASpending
WYANDOTTE TECHNOLOGIES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$2.2M	31 October 2026	Now / imminent	USASpending
ATLANTIC COUNCIL OF THE UNITED STATES, INC. (THE)	Department of Energy	541690 Other Scientific and Technical Consulting Services	$78K	30 November 2026	Now / imminent	USASpending
UTILICAST LLC	Department of Energy	541690 Other Scientific and Technical Consulting Services	$3.0M	30 December 2026	Now / imminent	USASpending
NATIONAL ACADEMY OF SCIENCES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$2.6M	31 December 2026	Now / imminent	USASpending
CEDIGAZ	Department of Energy	541690 Other Scientific and Technical Consulting Services	$30K	31 December 2026	Now / imminent	USASpending
TKC GLOBAL SOLUTIONS, LLC	Department of Energy	541690 Other Scientific and Technical Consulting Services	$19.0M	01 January 2027	Now / imminent	USASpending
NATIONAL ACADEMY OF SCIENCES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$2.9M (3 orders)	26 January 2027	Now / imminent	USASpending
DECK PRISM LLC	Department of Energy	541690 Other Scientific and Technical Consulting Services	$20.4M (2 orders)	31 January 2027	Now / imminent	USASpending
UNWIN CO	Department of Energy	541690 Other Scientific and Technical Consulting Services	$37.4M	28 February 2027	Now / imminent	USASpending
GIANT OAK, INC.	Federal Energy Regulatory Commission	541690 Other Scientific and Technical Consulting Services	$5.2M	27 March 2027	Now / imminent	USASpending
NATIONAL ACADEMY OF SCIENCES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$1.0M	31 March 2027	Now / imminent	USASpending
NATIONAL ACADEMY OF SCIENCES	Department of Energy	541690 Other Scientific and Technical Consulting Services	$918K	31 March 2027	Now / imminent	USASpending
TRAYNOR TECHNICAL PROJECT SERVICES LLC	Department of Energy	541690 Other Scientific and Technical Consulting Services	$704K	16 May 2027	~Q4 2026	USASpending
FESHARAKI ASSOCIATES CONSULTING & TECHNICAL SERVICES INC	Department of Energy	541690 Other Scientific and Technical Consulting Services	$231K	16 June 2027	~Q4 2026	USASpending

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

NAICS 541690 across every agency → · Everything DOE has open →